A low waist-hip ratio WHR) is known to correlate with health, fertility, and attractiveness. However, new evidence connects WHR to number of offspring. … More New Evidence on Waist-Hip Ratio Reveals Surprising Relationship to Fertility, Urges Revision of Attractiveness Theories
[This is a quick summary of the second chapter of my book, Not So Different: Finding Human Nature in Animals on play and recreation. The thesis of the book is that we can better understand human behaviors by studying their equivalents in other animals.] Isn’t playing a pointless distraction for an animal? At first glance, there doesn’t seem to be any … More What is the value of play?
Researchers have catalogued body language in bonobos, providing key insight into the evolution of human language. … More The Body Language of Bonobos and the Evolution of Human Language
Fear is a powerful motivator. It’s also a very interesting social behavior that can be either genetically programmed, socially learned, or both. … More Dominance Status Affects the Transmission of Fear
On November 15th at 4:30p, I will be giving a lecture regarding how the study of animal behavior and human evolutionary history provide powerful clues of how to design a criminal justice system that works with our inherent nature instead of against it. … More The Biological Foundations of Justice
Last week, Ken Ham put out a blog post denouncing the thesis of my book, that human and animal behaviors are not as different as they may appear. In case you haven’t heard of him, Ken Ham is the main force behind Answers in Genesis, a Christian ministry devoted to the literal interpretation of the Bible … More Response to Ken Ham: Yes, Humans and Animals are “Not So Different”
That “guilty dog” look is the product of millions of years of evolution and is actually a sophisticated social communiqué. … More Borrowed Signals: A Discussion of the “Guilty Dog” Look
I recently completed a small book tour through California promoting Not So Different: Finding Human Nature in Animals and the San Francisco Public Library shot a high-quality video of the talk. I’m really happy with how this turned out, except that the Q and A was cut off. There were some VERY insightful questions and a … More Video: My Book Talk at the San Francisco Public Library
The “pain grimace” is quite similar in many mammals, but where did it come from and why do we do it? … More Why do We and Other Animals Wince When in Pain?
A new study shows how immune activity can affect social behavior in order to limit the spread of an infection. … More More evidence Connecting the Immune System with Social Behavior, with Implications for Neurodiversity